Improvement in pumps



rUNITED STATES PATENT OFFIC.

HORACE M. KEITH, CF COMMERCE, M[CHIGAN.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 48,691, dated July 11, 1865.

To all 'whom it may concern:

Be it known that" I, HORACE M. KEITH, of Commerce, Oakland county, in the State or Michigan,have invented certain new and useful Improvements in Pumps; and I hereby dep clare that the followingis a true and exact description ot' the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Figure l in the annexed drawings represents a vertical Asection of my pump apparatus in the line z z, Fig. 2. Fig. 2 gives a vertical section of the same in line x x, Fig. 1.

The letter A represents a pump-stock of square timber, with a bore extending through it from end to end of sufficient size to admit the desired quantity of water.

B represents the water-reservoir, which consists of au oblong box with square sides, and adjusted to the pump-stock A by meansof a wide metal strap, f, extending the wh ole leu gth i of reservoir B.

The strap fis adjusted to reservoir B by having two flanges, one on each inner edge, which tit in grooves on the side of reservoir B. The strapf lits loosely on the pump-stock A, thus allowing the reservoir B and strap f to be adjusted at any desirable point on the pump-stock A. When reservoir B and strap f are in the position required a wedge is driven in between f and the pump-stock A to holdf in place.

D represents a cylindrical neck, securely fastened on the top of reservoir B,and having on its inner circumference an annular ange, e, through which the cylindrical plunger C is designed to operate.

The pump-stock A has two openin gs, g and h, in it to admit of the passage of the water in and out of the reservoir B; Opposite to the holes g and h are the leather valves m and n, the valve m being fastened at its upper end to the pump-stock A and valve u secured at top to reservoir B.

E represents a chamber attached to tho side of reservoir B, and rendered, like B, watertight at bottom.

^ L represents an arm,the upper end of which is fastened to plunger C, and the lower end, extending into the chamber E, has a scoop, v, attached to it for thepurpose of throwin g water out of E into the space between the neck D and the plunger C, the object of which will be explained hereinafter.

F designates the iron rod, fastened at its lower end to the top of plu-nger C, and at its upper end encircling a bolt, t, which passes through the metal sides o of handle P, these metal sides o being secured to the pump-stock A by a bolt, t, on which they play with a vertical motion.

The sides o have a series of holes through them, into any one of which the bolt t can be inserted, in order to lengthen or shorten the stroke of the plunger C.

The letter s designates a cutoft` in the bore of the pump-stock between the openings h and g, the design of which is to prevent the ascent of the water in the pump-stock until it first enters the reservoir B, through the opening g, and returns again to the bore 0f the pump-stock through the opening h.

In order to prevent the escape of water up ward between the plungerC and the flange e, a leather packing is inserted, which extends some distance downward. In addition to the leather packing the space between the neck l) and plunger C is lled with small shot, which are kept in place by having a collar, made of any suitable material, inserted near the top of the neck D. lThis collar will have a narrow opening in it opposite to the chamber e, through which opening water can be intr0 duced into the space between D and C, so as to fill up the interstices between the shot.

In operatin g my pump it will be seen that when the plunger C is raised by the action of handle P the water in the pump-stock below the cut-off s will enter the hole. g, force open the valve m, and then enter through a corresponding hole into the reservoir B. When, on the other hand, the plunger C descends, the pressure of the water will close the valve m and force open the valve n, so that the water can enter through hole h into the bore of the pump-stock A and Eind a vent through the spout R. At every ascent of the plunger C the arm L, which is attached to C,"will asscend also, and will, by means of the scoop V at its lower end, raise a sufficientsupply of water to the top of neck D and there discharge it in the shot packing, the chamber E having been already filled with water by liz-md for the the eyinder @the whole Censtrueted,arranged,

purpose above mentioned. and operating;` as and for thepurpose substan- Having thus described my invention, what tially as herein set forth. I claim, :md desire to secure by Letters Patent, HORA() E M. KEITH. is- Witnesses:

The reservoir B, the valves m and n, the JAMEs CARHART,

eut-off s, the swipe-pole L and bucket E, and JOHN BAIRD. 

